Headphone storage case



FIG. 1 is a front planar view of a headphone storage case in closed position;

FIG. 2 is a bottom planar view of FIG. 1 thereof;

FIG. 3 is a top planar view of FIG. 1 thereof;

FIG. 4 is a right side planar view of FIG. 1 thereof;

FIG. 5 is a left side planar view of FIG. 1 thereof;

FIG. 6 is a back planar view of FIG. 1 thereof; and,

FIG. 7 is a perspective view of FIG. 1 thereof.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for headphone storage case as shown and described. 